Triangle Angle Sums

Presentation

•

Mathematics

•

7th - 9th Grade

•

Hard

Joseph Anderson

FREE Resource

3 Slides • 12 Questions

Triangle Sum Theorem

Make sure you have a calculator!

Triangle Sum Theorem- using what you just learned, answer the following questions

Reminder: the angles of a triangle add up to 180 degrees!

Multiple Choice

A triangle has one angle that measure 45° and one that measures 60°. What is the measure of the third angle?

135°

75°

120°

105°

Multiple Choice

Will the following three angles for a triangle?

30°, 60°, 90°

yes

Multiple Choice

Find the measure of the missing angle.

30^o

110^o

150^o

40^o

Multiple Choice

A student is trying to construct triangles using four different sets of angles. The angles in each set are given below. Which set will form a triangle?

45°, 65°, 70°

150°, 110°, 100°

50°, 50°, 50°

90°, 90°, 90°

Multiple Choice

Find the measure of the indicated angle.

144

Multiple Choice

If 2 of the angles of a triangle are 30 and 70 degrees, the third angle measures...

100

Multiple Choice

Angles that are exactly 90 degrees are called _____ ______.

tight angles

acute angles

obtuse angles

right angles

Multiple Choice

Find the measure of the missing angle.

90^o

10⁰

130^o

50^o

Multiple Choice

What is the third angle of a triangle whose 1st angle is 79 and the 2nd angle is 43?

101

Multiple Choice

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.

45°

90°

180°

360°

Multiple Choice

Find the measure of the angle indicated.

139°

66°

138°

116°

Multiple Choice

Solve for x. (Hint: 70 + 60 + 8x + 2 = 180; combine like terms and solve for x)

Triangle Sum Theorem

Make sure you have a calculator!

Show answer

Auto Play

Slide 1 / 15

SLIDE

Similar Resources on Wayground

9 questions

Writing an equation given two points

Presentation

•

8th - 9th Grade

10 questions

Direct Variation

Presentation

•

7th - 8th Grade

10 questions

Proportional and Nonproportional Relationships

Presentation

•

7th - 8th Grade

11 questions

8.NS.1, 8.NS.2 Rational/Irrational Numbers

Presentation

•

8th - 9th Grade

11 questions

Classifying Rational Numbers

Presentation

•

8th - 9th Grade

12 questions

Finding a missing triangle angle

Presentation

•

6th - 9th Grade

12 questions

Multiply Polynomials

Presentation

•

8th - 9th Grade

12 questions

Systems of Equations Word Problems

Presentation

•

8th - 9th Grade

Popular Resources on Wayground

10 questions

Safety Day 2026 – Student Review

Quiz

•

9th Grade

21 questions

Continents and Oceans

Quiz

•

6th Grade

20 questions

Parts of Speech

Quiz

•

5th Grade

16 questions

Subject & Predicate

Quiz

•

5th Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

12 questions

Map Skills

Quiz

•

3rd Grade

22 questions

Continents and Oceans

Quiz

•

5th Grade

15 questions

Rounding Decimals

Quiz

•

5th Grade

Discover more resources for Mathematics

20 questions

Rational and Irrational Numbers

Quiz

•

8th Grade

16 questions

Proportional and Non Proportional Relationships in Tables, Graphs, and Equations

Quiz

•

7th Grade

20 questions

Constant of Proportionality

Quiz

•

7th Grade

20 questions

Halloween Trivia

Quiz

•

7th Grade

15 questions

One-Step Equations

Quiz

•

7th Grade

20 questions

Add and Subtract Integers

Quiz

•

6th - 8th Grade

16 questions

Adding and Subtracting Integers

Quiz

•

7th Grade

20 questions

Slope from a Graph

Quiz

•

8th Grade